<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">

      <!-- 放置标题图片 @是设置的别名-->
      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="">
        </h3>
      </div>

      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="mobile"
          v-model="loginForm.mobile"
          placeholder="mobile"
          name="mobile"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="Password"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button class="loginBtn" :loading="loading" type="primary" style="width:100%;margin-bottom:30px;" @click.native.prevent="handleLogin">登录</el-button>

      <div class="tips">
        <span style="margin-right:20px;">账号: 13800000002</span>
        <span> 密码: 123456</span>
        <div>
          {{ $store.getters.token }}
        </div>
        <div>
          {{ token }}
        </div>
      </div>
    </el-form>
  </div>
</template>

<script>
import { validMobile } from '@/utils/validate'
import { mapGetters } from 'vuex'
// import { reqLogin } from '@/api/user'

export default {
  name: 'Login',
  data() {
    const validateMobile = (rule, value, callback) => {
      if (!validMobile(value)) {
        callback(new Error('请输入正确的手机号'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        mobile: '13800000002',
        password: '123456'
      },
      loginRules: {
        mobile: [
          { required: true, message: '请输入用户名', trigger: ['blur', 'change'] },
          { validator: validateMobile, trigger: ['blur', 'change'] }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: ['blur', 'change'] },
          { min: 6, max: 16, message: '密码必须是6-16位', trigger: ['blur', 'change'] }
        ]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  computed: {
    ...mapGetters(['token'])
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      // 表单校验方法：valid表示是否成功
      this.$refs.loginForm.validate(async valid => {
        // 如果表单校验成功，执行内部代码
        if (valid) {
          console.log(this.$request)
          /**
           * 请求优化：
           * 当请求路径是个完整的地址：协议 域名 端口都带上的时候 则不会拼接axios的基地址
           *
           * 如果请求地址'/api/sys/login'开头，他会拼接服务器的地址并且会带上我们的基地址
           * http://localhost:8888/dev-api/api/sys/login
           *
           * 分析：（上面地址由以下三个拼接而成）
           * 自己开发服务器的地址： http://localhost:8888
           * 基地址： /dev-api
           * 请求接口地址：  /api/sys/login
           *
           * 我们想要接口：http://localhost:8888/api/sys/login，就要把基地址改成/api
           */
          // 第一种：
          // const loginUrl = '/sys/login'
          // const res = await this.$request.post(loginUrl, this.loginForm)
          // console.log(res)
          // 第二种优化
          // const res = await reqLogin(this.loginForm)
          // console.log(res)
          // 第三种：用vuex请求
          // 注意：这里必须加await ，因为请求是异步的，如果不加await，就会先打印登陆成功

          // 登录按钮优化：发送请求前，让按钮加载中
          this.loading = true
          try {
            await this.$store.dispatch('user/login', this.loginForm)
            // 请求成功后，关闭按钮加载
            // this.loading = false
            // 跳转首页
            this.$router.push('/')
          } catch (error) {
            console.log('失败', error)
            // ***这里错误提示统一写在响应拦截器
            // this.$message.error(error.message)
            // this.loading = false
          } finally {
            // finally是无论成功失败，都会执行的结果
            this.loading = false
          }
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray:#407ffe;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
    background-image: url('~@/assets/common/login.jpg'); // 设置背景图片
  background-position: center; // 将图片位置设置为充满整个屏幕
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.9); // 输入登录表单的背景色
    border-radius: 5px;
    color: #454545;
      .el-form-item__error {
      color: #fff;
      font-size: 14px;
      }
  }
  .loginBtn {
        background: #407ffe;
        height: 64px;
        line-height: 32px;
        font-size: 24px;
      }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
